Fumihide Tomizawa, president and chief executive of SoftBank Robotics, speaks while standing next to the Whiz autonomous floor-cleaning machine during a news conference in Tokyo, Japan, on Monday. Photo: Bloomberg

Fumihide Tomizawa, president and chief executive of SoftBank Robotics, speaks while standing next to the Whiz autonomous floor-cleaning machine during a news conference in Tokyo, Japan, on Monday. Photo: Bloomberg